Silicon Chip May 2010

This month’s Silicon Chip Electronics Magazine has some practical down-to earth articles on saving money around your office. We look at how you can save up to 50% off your lighting bill, with the replacement of light fittings with more modern equipment and some practical steps to lower your power bill. Also this month a practical design guide to using the TDA7377 12V Amplifier IC, this amplifier IC delivers excellent and accurate performance for amplifier designs. This month we look at designing an amplifier using this IC, together with a complete project in this issue.

This month’s projects includes a Solar-Powered Lighting System, this unit is ideal for use in the shed, greenhouse or garage. The unit uses all readily available parts and includes a very efficient charging method to ensure maximim charge. High efficiency LED lights are used for the illumination and can provide sufficent light for a large room. Also the month a compact 20W Stereo Amplifier based on the TDA7377 IC. This unit features excellent performance and can be used for both music and PA applications. Finally this month a useful, USB charger for your car. Instead of using the standard linear regulators, this unit uses a switch mode power supply, to deliver up to 89% efficiency, ideal for use when charging your phone or iPOD in a remote location. All projects come complete with circuit diagram and electronic parts list.

Part Code: SILCHIPMAY2010

Features

Slash Your Factory/Office Lighting Bill
A Look at the TDA7377 Quad 12V Amplifier IC
Review: Tektronix DMM4050 6.5 Digit Multimeter

Projects

A Solar-Powered Lighting System
Build a Compact 12V 20W Stereo Amplifier
Low-Power Car/Bike USB Charger
Digital Audio Signal Generator, Part 3

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